Electroencephalography power and coherence changes with age and motor skill development across the first half year of

Ran Xiao1, Joanne Shida-Tokeshi1, Douglas L Vanderbilt2

  • 1Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California, United States of America.

Plos One
|January 13, 2018
PubMed

Insights

This study reveals how brain activity, measured by electroencephalography (EEG), changes as infants develop reaching skills. These findings offer insights into early brain development and potential detection of atypical development.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Infant Research

Background:

  • Previous research linked infant electroencephalography (EEG) to cognitive and motor development after 5 months.
  • Understanding early neural changes related to motor skill acquisition is crucial for infant brain development research.

Purpose of the Study:

  • To investigate the relationship between EEG measures (power and coherence) and motor skill development in infants younger than 5 months.
  • To describe the emergence and changes in specific EEG patterns during early reaching skill development.

Main Methods:

  • Longitudinal electroencephalography (EEG) recordings were collected monthly from 21 typically developing infants (38-203 days old).
  • Analysis focused on relative power in the 6-9 Hz frequency band and coherence between electrode pairs.
  • A total of 71 EEG sessions were analyzed.

Main Results:

  • A distinct peak in relative power within the 6-9 Hz band emerged and developed over the first six months of life.
  • Coherence increased in bilateral frontal-parietal networks.
  • Interhemispheric connectivity in motor cortices showed a general decrease.

Conclusions:

  • This pilot study provides a foundational description of neural function changes associated with motor skill development in early infancy.
  • Findings suggest experience-dependent plasticity in the infant brain.
  • This research may aid in the early detection of atypical infant brain development.

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